 is find the size and the nature of the image the nature of the image will be real and inverted why because it is being screened okay sure there is a screen required for that so real and inverted why very obvious size of magnification is minus V by U which is negative of negative 54 by negative 18 which is equal to height of the image upon height of the object so height of the image will be negative 3 times height of the object so negative 21 centimeter here negative shows inverted image so the height of the image is 21 centimeter